Sample Filament Rack for Printrbot Simple Metal

I had a bunch of filament sample rolls I got from Amazon and got tired of filament bunching up and ruining prints so I made this simple free-hanging filament holder. Does not actually attach to z-posts, just rests on top of. My print came out to just .010 larger, so the fit is really nice. The spool is snug into the fixture with a flat key to not roll around. Removes easily to quickly swap out. With a 50% infill you could even hold a full spool (tried myself). This is my first thing made by myse